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Stock-Based Compensation Plans (Tables)
 12 Months Ended
Dec. 31, 2014
Stock-Based Compensation Plans [Abstract]  
Share-based Compensation Related to Restricted Stock Awards
The total stock-based compensation expense related to restricted stock awards for the years ended December 31, are as follows (in thousands):

 
 
2014
  
2013
  
2012
 
Employees
 
$
1,104
  
$
1,163
  
$
650
 
Non-employee Directors
  
510
   
413
   
272
 
Total
 
$
1,614
  
$
1,576
  
$
922
 
Stock-based Compensation Expense
Stock-based compensation, which includes compensation recognized on stock option grants and restricted stock awards, was included in contract costs and the following line items on the accompanying statements of income for the years ended December 31, 2014, 2013 and 2012 (in thousands):

 
 
2014
  
2013
  
2012
 
Stock-based compensation included in contract costs
 
$
1,739
  
$
1,576
  
$
1,076
 
Income tax benefit recognized for stock-based compensation
  
(669
)
  
(606
)
  
(414
)
Total stock-based compensation expense,  net of income tax benefit
 
$
1,070
  
$
970
  
$
662